text: /*
   * Copyright 2018 Advanced Micro Devices, Inc.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
   * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
   * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   * OTHER DEALINGS IN THE SOFTWARE.
   *
   * Authors: AMD
   *
   */
  
  #include "vm_helper.h"
  #include "dc.h"
  
  void vm_helper_mark_vmid_used(struct vm_helper *vm_helper, unsigned int pos, uint8_t hubp_idx)
  {
  	struct vmid_usage vmids = vm_helper->hubp_vmid_usage[hubp_idx];
  
  	vmids.vmid_usage[0] = vmids.vmid_usage[1];
  	vmids.vmid_usage[1] = 1 << pos;
  }
  
  int dc_setup_system_context(struct dc *dc, struct dc_phy_addr_space_config *pa_config)
  {
  	int num_vmids = 0;
  
  	/* Call HWSS to setup HUBBUB for address config */
  	if (dc->hwss.init_sys_ctx) {
  		num_vmids = dc->hwss.init_sys_ctx(dc->hwseq, dc, pa_config);
  
  		/* Pre-init system aperture start/end for all HUBP instances (if not gating?)
  		 * or cache system aperture if using power gating
  		 */
  		memcpy(&dc->vm_pa_config, pa_config, sizeof(struct dc_phy_addr_space_config));
  		dc->vm_pa_config.valid = true;
  #if defined(CONFIG_DRM_AMD_DC_DCN)
  		dc_z10_save_init(dc);
  #endif
  	}
  
  	return num_vmids;
  }
  
  void dc_setup_vm_context(struct dc *dc, struct dc_virtual_addr_space_config *va_config, int vmid)
  {
  	dc->hwss.init_vm_ctx(dc->hwseq, dc, va_config, vmid);
  }
  
  int dc_get_vmid_use_vector(struct dc *dc)
  {
  	int i;
  	int in_use = 0;
  
  	for (i = 0; i < MAX_HUBP; i++)
  		in_use |= dc->vm_helper->hubp_vmid_usage[i].vmid_usage[0]
  			| dc->vm_helper->hubp_vmid_usage[i].vmid_usage[1];
  	return in_use;
  }
  
  void vm_helper_init(struct vm_helper *vm_helper, unsigned int num_vmid)
  {
  	vm_helper->num_vmid = num_vmid;
  
  	memset(vm_helper->hubp_vmid_usage, 0, sizeof(vm_helper->hubp_vmid_usage[0]) * MAX_HUBP);
  }
  